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Article: Remineralisation of enamel with silver diamine fluoride and sodium fluoride

TitleRemineralisation of enamel with silver diamine fluoride and sodium fluoride
Authors
KeywordsCaries
Demineralisation
Enamel
Remineralisation
Silver diamine fluoride
Sodium fluoride
Issue Date2018
PublisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dental
Citation
Dental Materials, 2018, v. 34 n. 12, p. e344-e352 How to Cite?
AbstractObjective: To evaluate the remineralising effect of the adjunctive application of 38% silver diamine fluoride (SDF) solution and 5% sodium fluoride (NaF) varnish on artificial enamel caries lesions. Methods: Forty-eight demineralised enamel specimens were allocated into four groups. Group 1 received 38% SDF and 5% NaF; Group 2 received 38% SDF; Group 3 received 5% NaF; and Group 4 received deionized water. After pH cycling, the surface morphology and fluoride content of the specimens were studied via scanning electron microscopy (SEM)/energy dispersive spectroscopy (EDS). The lesion depth and crystal characteristics were assessed using micro-computed tomography and X-ray diffraction (XRD) respectively. The crystallization reaction was performed by incubating hydroxyapatite powder with NaF or SDF for 48 h. The precipitates were studied via transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Results: SEM demonstrated the destruction of the enamel surface in Group 4. EDS revealed that the mean fluoride weight percentage of Groups 1–4 were 1.28 ± 0.15, 1.33 ± 0.19, 1.03 ± 0.09 and 0.87 ± 0.04 respectively. The mean lesion depths of Groups 1–4 were 129 ± 14 μm, 131 ± 16 μm, 153 ± 10 μm and 181 ± 21 μm respectively. The addition of NaF to SDF did not reduce the lesion depths (p = 0.779). XRD revealed that silver chloride formed as a main product in Groups 1 and 2. Meanwhile, TEM analysis indicated that silver nanoparticles were incorporated into hydroxyapatite crystal in SDF-treated hydroxyapatite. XPS spectra suggested that the chemical state of the silver was metallic. Significance: The adjunctive application of SDF and NaF varnish had a similar remineralising effect to that of SDF on enamel caries.
Persistent Identifierhttp://hdl.handle.net/10722/266001
ISSN
2017 Impact Factor: 4.039
2015 SCImago Journal Rankings: 1.339
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYu, Y-
dc.contributor.authorMei, L-
dc.contributor.authorZhao, S-
dc.contributor.authorLi, QL-
dc.contributor.authorLo, ECM-
dc.contributor.authorChu, CH-
dc.date.accessioned2018-12-17T02:16:30Z-
dc.date.available2018-12-17T02:16:30Z-
dc.date.issued2018-
dc.identifier.citationDental Materials, 2018, v. 34 n. 12, p. e344-e352-
dc.identifier.issn0109-5641-
dc.identifier.urihttp://hdl.handle.net/10722/266001-
dc.description.abstractObjective: To evaluate the remineralising effect of the adjunctive application of 38% silver diamine fluoride (SDF) solution and 5% sodium fluoride (NaF) varnish on artificial enamel caries lesions. Methods: Forty-eight demineralised enamel specimens were allocated into four groups. Group 1 received 38% SDF and 5% NaF; Group 2 received 38% SDF; Group 3 received 5% NaF; and Group 4 received deionized water. After pH cycling, the surface morphology and fluoride content of the specimens were studied via scanning electron microscopy (SEM)/energy dispersive spectroscopy (EDS). The lesion depth and crystal characteristics were assessed using micro-computed tomography and X-ray diffraction (XRD) respectively. The crystallization reaction was performed by incubating hydroxyapatite powder with NaF or SDF for 48 h. The precipitates were studied via transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Results: SEM demonstrated the destruction of the enamel surface in Group 4. EDS revealed that the mean fluoride weight percentage of Groups 1–4 were 1.28 ± 0.15, 1.33 ± 0.19, 1.03 ± 0.09 and 0.87 ± 0.04 respectively. The mean lesion depths of Groups 1–4 were 129 ± 14 μm, 131 ± 16 μm, 153 ± 10 μm and 181 ± 21 μm respectively. The addition of NaF to SDF did not reduce the lesion depths (p = 0.779). XRD revealed that silver chloride formed as a main product in Groups 1 and 2. Meanwhile, TEM analysis indicated that silver nanoparticles were incorporated into hydroxyapatite crystal in SDF-treated hydroxyapatite. XPS spectra suggested that the chemical state of the silver was metallic. Significance: The adjunctive application of SDF and NaF varnish had a similar remineralising effect to that of SDF on enamel caries.-
dc.languageeng-
dc.publisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dental-
dc.relation.ispartofDental Materials-
dc.subjectCaries-
dc.subjectDemineralisation-
dc.subjectEnamel-
dc.subjectRemineralisation-
dc.subjectSilver diamine fluoride-
dc.subjectSodium fluoride-
dc.titleRemineralisation of enamel with silver diamine fluoride and sodium fluoride-
dc.typeArticle-
dc.identifier.emailMei, L: mei1123@hku.hk-
dc.identifier.emailLo, ECM: edward-lo@hku.hk-
dc.identifier.emailChu, CH: chchu@hku.hk-
dc.identifier.authorityMei, L=rp01840-
dc.identifier.authorityLo, ECM=rp00015-
dc.identifier.authorityChu, CH=rp00022-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.dental.2018.10.007-
dc.identifier.pmid30482611-
dc.identifier.scopuseid_2-s2.0-85055503356-
dc.identifier.hkuros296376-
dc.identifier.volume34-
dc.identifier.issue12-
dc.identifier.spagee344-
dc.identifier.epagee352-
dc.identifier.isiWOS:000451619700004-
dc.publisher.placeUnited States-

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